1. Who invented Laser ?

Answer:

Charles H. Townes

2. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849

3. Who invented Printing Press ?

Answer:

Johannes Gutenberg

4. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

5. Who invented Atomic Bomb ?

Answer: J. Robert Oppenheimer of U.S.A. in 1945

6. Who invented Vitamin C ?

Answer:

Scottish naval surgeon James Lind in 1747

7. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948